8. Enzymes that are produced only when substrate is present are termed exoenzymes. endoenzymes. constitutive enzymes. induced enzymes. conjugated enzymes.

induced enzymes

9. Enzymes that catalyze removing electrons from one substrate and adding electrons to another are called phosphotransferases. oxidoreductases. decarboxylases. aminotransferases. ligases.

oxidoreductases

10. When enzyme action stops due to a buildup of end product this control is called negative feedback. competitive inhibition. enzyme induction. enzyme repression. None of the choices are correct.

negative feedback

11. Most electron carriers are coenzymes. enzymes. hydrogens. inorganic phosphate. All of the choices are correct.

coenzymes

12. Exergonic reactions include synthesis of large carbohydrates. only occur in heterotrophs. occur during aerobic cellular respiration. do not occur in anaerobic cellular respiration. occur when ADP binds to inorganic phosphate to form ATP.

occur during aerobic cellular respiration

13. In the cell, energy released by electrons is often used to phosphorylate ATP. ADP. pyruvic acid. oxygen. NAD.

ADP

14. The most likely place where an exoenzyme participates in a chemical reaction is mitochondria. within the cell membrane. lysosomes. cytoplasm. outside of the cell.

outside of the cell

15. All of the following are exoenzymes except ATP synthase. streptokinase. penicillinase. collagenase. elastase.

ATP synthase

16. All of the following pertain to glycolysis except it occurs without oxygen. ends with formation of pyruvic acid. occurs during fermentation. degrades glucose to CO2 and H2O. involves reduction of NAD.

19. Which of the following is NOT involved in the step that occurs between glycolysis and the TCA cycle? reduction of NAD decarboxylation of pyruvic acid coenzyme A attaches to an acetyl group dehydrogenation of pyruvic acid pyruvic acid accepts electrons from NADH

pyruvic acid accepts electrons from NADH

20. In bacterial cells, the electron transport system is located in the cell membrane. mitochondria. chloroplasts. ribosomes. cytoplasm.

cell membrane

21. In which pathway is the most NADH generated? electron transport system Krebs cycle glycolysis alcoholic fermentation mixed acid fermentation

Krebs cycle

22. The reactions of fermentation function to produce _____ molecules for use in glycolysis. pyruvic acid ATP NAD NADH glucose

NAD

During which of the phases of cellular respiration is the majority of ATP formed? electron transport Krebs cycle glycolysis processing of pyruvic acid for the Krebs cycle All phases produce the same number of ATP molecules.

electron transport

24. In bacterial cells, when glucose is completely oxidized by all the pathways of aerobic cellular respiration, how many ATP are generated? 2 ATP 3 ATP 24 ATP 36 ATP 38 ATP

38 ATP

25. When glucose is broken down by glycolysis during bacterial fermentation, how many ATP are generated? 2 ATP 3 ATP 24 ATP 36 ATP 38 ATP

28. Mixed acid fermentation produces butyric acid. occurs in all bacteria.produces acids plus CO2 and H2 gases. is seen in Streptococcus and Lactobacillus. also produces ethanol.

produces acids plus CO2 and H2 gases.

29. Anaerobic cellular respiration is also called fermentation. only involves glycolysis. does not generate ATP. utilizes an electron transport system. uses the same final electron acceptors as aerobic respiration.